This review examines the state-of-the-art knowledge of high-mass star and massive cluster
formation, gained from ambitious observational surveys, which acknowledges the multiscale …

Although fundamental for astrophysics, the processes that produce massive stars are not
well understood. Large distances, high extinction, and short timescales of critical …

Fast radio bursts, are astronomical radio flashes of unknown physical nature with durations
of milliseconds. Their dispersive arrival times suggest an extragalactic origin and imply radio …

We present the unWISE Catalog, containing the positions and fluxes of roughly 2 billion
objects observed by the Wide-field Infrared Survey Explorer (WISE) over the full sky. The …

Using a sample of 69,919 red giants from the SDSS-III/APOGEE Data Release 12, we
measure the distribution of stars in the [α/Fe] versus [Fe/H] plane and the metallicity …

Abstract The APEX Telescope Large Area Survey of the Galaxy (ATLASGAL) is an unbiased
870 μm submillimetre survey of the inner Galactic plane (| ℓ|< 60° with| b|< 1 5). It is the …

The Sloan Digital Sky Survey (SDSS; York et al. 2000) started observations in 1998 and has
completed three different phases. The data collected includes optical imaging of most of the …

Star formation is a fundamental process for galactic evolution. One issue over the last
several decades has been determining whether star formation is induced by external …

APOGEE is a high-resolution (R∼ 22,000), near-infrared, multi-epoch, spectroscopic survey
of the Milky Way. The second generation of the APOGEE project, APOGEE-2, includes an …

Context. Thanks to its excellent 5100 m high site in Chajnantor, the Atacama Pathfinder
Experiment (APEX) systematically explores the southern sky at submillimeter wavelengths …